CVE-2020-12418

Mozilla: Information disclosure due to manipulated URL object

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Severity

Important

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · June 30, 2020

Updated · November 22, 2025

Description

The Mozilla Foundation Security Advisory describes this flaw as:

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor